LAB 8 Lab Work +Post Lab Analysis 15/10/2015Q1. Vgs=-1.5VVgs=-2VVgs = -2.5 V

VdsId(mA)VdsId(mA)Vds

0.0600000

-0.29-0.04-0.1-0.033-0.07-0.0303

-0.54-0.06-0.19-0.061-0.14-0.0591

-0.8-0.07-0.3-0.0924-0.21-0.0895

-1.33-0.08-0.42-0.1091-0.3-0.1209

-1.66-0.084-0.56-0.1459-0.43-0.1643

-2.11-0.086-0.74-0.1745-0.54-0.1982

-2.42-0.0876-0.89-0.1919-0.63-0.241

-2.88-0.089-1.32-0.212-0.89-0.285

-3.16-0.09-1.53-0.216-1.06-0.317

-3.39-0.09-1.76-0.22-1.28-0.346

-3.78-0.09-2.03-0.224-1.55-0.368

-3.98-0.09-2.45-0.229-1.84-0.38

-2.96-0.234-2.13-0.388

-3.21-0.238-2.41-0.395

-3.42-0.239-2.75-0.401

-3.86-0.242-3.05-0.407

-4.27-0.246-3.39-0.412

-4.51-0.248-3.71-0.417

-4.1-0.422

-4.38-0.426

-4.48-0.427

Part D: Vgs =-3V

VdsId(mA)

00

-0.05-0.0203

-0.1-0.0555

-0.2-0.1009

-0.31-0.1514

-0.43-0.208

-0.52-0.239

-0.62-0.279

-0.74-0.324

-0.84-0.355

-0.94-0.387

-1.07-0.423

-1.35-0.488

-1.67-0.542

-1.92-0.568

-2.23-0.587

-2.52-0.599

-2.78-0.608

-2.95-0.613

-3.18-0.618

-3.5-0.626

-3.88-0.635

-4.16-0.64

-4.31-0.643

-4.44-0.646

Graph for Id vs Vds for different values of Vgs

Sr.No.Vgs in (V)Rrds in (k)R0 (in k)Vearly in (V)

1-1.510.8342250.126.101

2-24.2918125.01226.125

3-2.52.936871.43526.0

4-32.66747.61926.1428

Therefore the Early voltage is approximately 26.09 V.

Q2.

Vbs=0VVbs=1 VVbs=2VVbs=3V

VgsId(uA)VgsId(uA)VgsId(uA)VgsId(uA)

00000000

-0.320-0.250-0.260-0.270

-0.490-0.540-0.490-0.540

-0.74-1.7-0.780-0.770-0.750

-1.03-13.9-1.04-4.8-1-0.5-1.02-0.1

-1.25-25.4-1.28-17.2-1.26-9.2-1.24-3.7

-1.56-42.5-1.54-30.5-1.56-24.7-1.55-18.7

-1.78-50.4-1.78-43.1-1.74-32.4-1.77-28.9

-2.03-62.9-2.04-53.6-2.04-47.2-2.04-41.1

-2.28-75.4-2.27-64.7-2.26-54.2-2.27-49.7

-2.54-83.9-2.52-71.7-2.52-65.2-2.55-63.1

-2.77-92.7-2.77-83.4-2.76-72-2.79-69.4

-3.02-100.3-3.02-89.1-3.04-84-3.04-81.1

-3.27-109.8-3.27-101.2-3.32-94.2-3.26-86

-3.52-117.1-3.51-105.9-3.59-99.4-3.52-95.6

-3.75-126.9-3.76-119-3.77-107.8-3.79-103.1

-4.01-130.7-4.02-123.4-4.01-114.5-4.03-110.9

Id vs Vgs for diff Vsb

Vt vs Vsb Graph

The mod value of slope is 0.1427

VsbVt

0-0.512

-1-0.683

-2-0.817

-3-0.943